<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div style="background-color: red;width: 100px;height: 100px;padding: 5px 10px;">
    <div style="background-color: blue;width: 50px;height: 50px;"></div>
</div>
</body>
</html>